Pectin is a water-soluble, gel-forming fiber that is used commercially to make jellies and to provide fiber in enteral formulas whose structure is:
A. based on polygalacturonic acids, some of which are methylated.
B. a long, linear polymer of 1,4 beta-linked glucose units.
C. comprised of many phenol units.
D. a heterogeneous group of polysaccharide substances.
(this multiple choice question has been scrambled)